SALE ON OFFERS N ° 37 PARIS

1875 (6 Feb.) Insufficiently franked envelope to Montpellier/France
1875 (6 Feb.) Insufficiently franked envelope to Montpellier/France bearing a 1866 10k, perf. 14 1/2, on horizontally laid paper, tied by RIGA cds, French RUSSIE ERQUELINES-PARIS entry-cds alongside, ms "40" corresponding to the 10k paid, hs "3" (décimes) for due to pay (70c - 40c = 30c), Russian and French hs for Insufficiently paid, interesting taxation of insufficiently paid cover